Self-cleaning restroom, and method for cleaning a restroom

ABSTRACT

A restroom including an enclosure, and bathroom fixtures mounted centrally within said enclosure on a pedestal. The restroom is automatically cleaned by moving a vertical spray boom around the inner periphery of the enclosure to spray both the sidewall of the enclosure and the fixtures mounted therewithin with cleansing fluid, the fluid then being drained from the enclosure, after which any accumulated vapors are exhausted. Heated drying air is then passed through the enclosure to complete the cleaning cycle.

United States Patent [191 McTighe et al.

[ Sept. 24, 1974 [54] SELF-CLEANING RESTROOM, AND 3,447,166 6/ 1969Gordon. 4]] METHOD FOR CLEANING A RESTROOM 3,742,520 7/1973 Bernardl 4/1[76] Inventors: Gilbert T. McTighe, 804 N.

Windsor, Apt. 10, Mitchell, S. Dak. Prim ry Examinerl-lenry K. Artis57301; Sture A. Johansson, Barrett Attorney, Agent, or FirmBacon &Thomas Gardens, Apt. 14 M, Kendall Park, NJ. 00824 22 Filed: May 4, 1971[571 ABSTRACT [21] Appl. No: 140,227 Arestroom including an enclosure,and bathroom fixtures mounted centrally within said enclosure on apedestal. The restroom is automatically cleaned by [52] US. Cl 4/1,4/145, 113345166781: moving a vertical spray boom around the innerperiph cry of the enclosure to spray both the sidewall of the 2; z y figfg gg enclosure and the fixtures mounted therewithin with 1 0 "i"'cleansing fluid, the fluid then being drained from the I l enclosure,after which any accumulated vapors are exhausted. Heated drying air isthen passed through the [56] uNlTE g g rxgfgs gz rENTs enclosure tocomplete the cleaning cycle. 3,381,312 5/1968 Whitla 4/l 13 Claims, 6Drawing Figures l! 1 '54 il I 1 5 1 g l ii i it ef w p.

lllli f 'illI|il, 56 Ill I l l 1 I I l 3 I I z I I 4'-\\ \34 L l i I0 eas i #3 y p} i 28 so- T so i 1% I 54- I 4 a a mmmsarzmn 1 p 3QA'r'roRNEYs SELF-CLEANING RESTROOM, AND METHOD FOR CLEANING A RESTROOMBACKGROUND OF THE INVENTION 1. Field of the Invention The presentinvention relates generally to restrooms of the type utilized ingasoline filling stations and the like, and more particularly to amodular self-cleaning restroom, and a method for automatically cleaningsuch restrooms.

2. Description of the Prior Art Gasoline filling stations and othersimilar structures are commonly provided with restrooms for theconvenience of the general'public, such restrooms commonly including awater closet and a lavatory or wash basin, and possibly other fixtures.Because of the continuous use by transients such facilities needfrequent cleaning, the accommodation of which need places considerableand unwelcome demands on otherwise busy operating personnel.

There is thus a need, for an easily cleaned restroom, preferably onethat can be cleaned automatically so that minimum demands are placed onbusy employees. The present invention is directed to satisfying thatneed.

SUMMARY OF THE INVENTION The present restroom includes an uprightenclosure having a sidewall and a bottom wall, the sidewall having anaccess door mounted thereon. The bottom wall has a drain therein, andsupports a pedestal that extends centrally upwardly through theenclosure. The upper end ,of the pedestal supports a top wall, theperiphery of which is spaced from the enclosure sidewall to provide anannular flow space therebetween.

The pedestal also serves as the support for a water closet, a lavatoryor sink, a fixture for holding tissue, a dryer for the hands, andnecessary lighting fixtures. Thus, none of these items need be mountedon the container sidewall, a feature that contributes to theselfcleaning ease of the restroom. The pedestal and all of the bathroomfixtures and other items carried thereby are spaced from the enclosuresidewall.

A vertical spray boom is mounted by upper and lower tracks on theinterior of the enclosure sidewall, and is arranged to travel around theperiphery of the sidewall. [t is in order to provide for this movementthat the pedestal and the items supported thereon are spaced from thesidewall. The boom includes both inwardly and outwardly directednozzles, and the upper end thereof extends through the annular flowspace into the region above the enclosure top wall, where it is mountedon a carrier that runs on the upper support track and which is driven bya motor. The upper end of the spray boom is connected, through solenoidvalves, to a source of cleansing fluid.

In order to provide forthe movement of air through the restroom, theenclosure sidewall has a vent therein, and an exhaust fan is mounted inthe enclosed region above the top wall. When the exhaust fan isoperated, air is pulled into the enclosure through the vent, passesupwardly through the annular flow space that also serves to accommodatethe upper end of thespray boom, and exits through the exhaust fan. Thepositions of the vent and the exhaust fan can be reversed, if desired.

A device for supplying heated, dry air to the enclosure is alsoprovided, which device can for convenience be incorporated with thevent. The spray boom motor, the cleansing liquid supply apparatus, theexhaust fan, and the device for supplying heated air are all connectedwith a control unit, which when actuated will automatically operate eachof these components in proper sequence to clean the restroom of theinvention.

The present method of cleaning a restroom includes the sequential stepsof spraying the interior of the restroom with cleansing fluid, drainingaway the resultant liquid, exhausting from the enclosure any accumulatedvapors, and finally passing through the enclosure heated drying air.These steps are carried out in the present method in the following way.

When it is desired to clean the present restroom, the operator firstpicks up any scrap paper or the like, and applies any necessarydetergent to loosen lipstick marks or the like. The door of the restroomis then closed, and the control unit is actuated.

Upon actuation of the control unit the restroom door is firstautomatically locked, to prevent anyone being injured by accidentalopening thereof during a cleaning cycle. The spray boom is then placedin operation, and repeatedly moves around the inner periphery of theenclosure in alternating wash and rinse modes. The control unit thenterminates operation of the boom and actuates the exhaust fan, whichremoves steam and other vapors from the enclosure while the usedcleansing liquids are drained away. Finally, heated dry air is suppliedto the enclosure, after which the control unit completes a cleaningcycle and unlocks the access door.

The restroom is then ready for further use, thorough cleaning thereofhaving been accomplished with minimum demands of time and effort on theoperator or attendant. Because cleaning is an easy matter with thepresent method and apparatus, the chore is likely to be performedwhenever needed, which contributes to the sanitary and aesthetic comfortof customers or others using the facility. It is a principal object ofthe presentinvention to provide a method for automatically cleaning arestroom.

Another principal object is to provide a self-cleaning modular restroom,designed for easy operation and maximum sanitation and aesthetic appeal.

It is also an object to provide a restroom uniquely designed to becleaned by spraying the same with cleansing liquids.

A further object is to provide apparatus for automatically cleaning arestroom.

Other objects and many of the attendant advantages of the invention willbecome readily apparent from the following Description of the PreferredEmbodiment, when taken together with the accompanying drawings.

DESCRlPTlON OF THE DRAWINGS- FIG. 1 is a perspective view of the modularrestroom of the invention;

FIG. 2 is a horizontal sectional view taken along the line 22 of FIG. 1,showing the interior of the restroom;

FIG. 3 is a vertical sectional view taken on the line 3-3 of FIG. 2,showing in detail the spray boom and other features of the invention;

FIG. 3A is an enlarged view taken on line 3a3a of FIG. 3, showing theupper carrier and track arrangement;

FIG. 4 is a diagrammatic view showing the fluid and electrical circuitsof the invention; and

FIG. 5 is a front view of a public display plaque for holding therestroom key.

DESCRIPTlON OF THE PREFERRED EMBODIMENT Referring now to the drawings,the modular restroom of the invention is shown at 2, the module beingdesigned for installation within a building such as a restaurant orgasoline filling station. With suitable modifications to withstand theelements, it is to be understood that the restroom 2 can also be erectedout of doors as a free standing structure, if desired.

The restroom 2 includes a circular floor 4 having a drain 6 therein, theupper surface 8 of the floor sloping downwardly toward the drain.Mounted on the floor 4 is an upright cylindrical enclosure 10 having aselfclosing access door 12 therein, which enclosure can be made ofmetal, plastic or some other suitable material.

Positioned centrally within the cylindrical enclosure 10 and extendingupwardly from the floor 4 is a hollow rectangular pedestal 14, the floordrain 6 being offset from the pedestal, and the pedestal being spacedfrom the enclosure sidewall 10. The pedestal 14 is utilized for mountingall bathroom fixtures, and supports at its upper end a circular roof 16.The peripheral edge 18 of the roof 16 is spaced from the cylindricalenclosure sidewall 10 completely therearound, to provide an an nularflow space 20.

Mounted on the side of the pedestal 14 facing away from the door 12 is aone-piece watercloset 22 of the type that is easily washed down byspraying with cleansing liquid, a toilet tissue dispenser 24 beingrecessed into the pedestal l4 nearby and having a watertight lid 26thereon that is normally held closed by magnets or some other suitablelatch device. The side of the pedestal 14 facing the door 12 has aone-piece wash basin or lavatory 28 mounted thereon, again ofa designthat can be easily spray cleaned. Recessed in the pedestal above thelavatory 28 is an electric hand drier 30, designed and mounted to beunaffected by water sprayed thereon. The standpipe 32 for the fixtures22 and 28 is contained within the pedestal 14, as is all electricalwiring,,the pedestal being of a size so that a person can easily walkfrom one side to the other thereof.

Typically, the pedestal 14 will measure about 8 inches thick by about 18inches wide, and the enclosure 10 will have a diameter of about 8 feet.A waterproof and unbreakable mirror 34 is mounted on the pedestal 14above the lavatory 28, and a waterproof lighting fixtures 36 are mountedat an elevated position on both sides of the pedestal. An ultravioletray sanitation device 38 is mounted in a waterproof manner on thepedestal 14 above the watercloset 22 for sanitizing the same after eachuse, and can be automatically controlled by a time switch (not shown)operated each time the door 12 is opened.

The cylindrical enclosure sidewall 10 extends above thepedestal-supported roof l6, and is closed by a ceilcould also be mountedelsewhere. A vent 44 is mounted on the lower portion of the enclosuresidewall 10, and has a hot air blower 46 associated therewith. When theexahust fan 42 is running, air is drawn in through the vent 44, passesthrough the annular flow space 20, and is exhausted.

The restroom 2 as described is specifically designed for being spraycleaned, all of the fixtures being suited to this purpose, and allelectrical units and the tissue dispenser 24 being waterproof. Suchspray cleaning is accomplished with spray apparatus 47 mounted withinthe enclosure 10, said apparatus including a vertically disposed sprayboom 48 having spaced, inwardly and outwardly directed spray nozzles 50mounted thereon.

The spray boom 48 is mounted on upper and lower continuous circularrails or tracks 52 and 54, respectively, secured to the interior of thecylindrical enclosure sidewall 10. The upper track 52 is disposed abovethe pedestal-supported roof 16, and the upper end of the boom 48 extendsthrough the annular flow space 20 and is connected to a carrier unit 56that rides on the track 52, and which includes an electric drive motor58. The lower end of the boom 48 is connected to a carrier unit 60 thatrides on the lower track 54. When the motor 58 is energized, therefore,the vertical boom will travel completely around the interior of thecylindrical enclosure 10.

An armature-type electrical swivel joint 60 is suspended from theceiling structure 40, and electrical cables 62 extend therefromto themotor 58. Similarly, a fluid swivel joint 64 is also suspended from theceiling structure 40, the outlet thereof being connected by a hose 66 toan inlet 68 on the upper end of the spray boom 48. Cleansing liquid issupplied to the inlet of the fluid swivel joint 64 by a conduit 70connected to the outlet of an electric pump 72.

The preferable operating cycle for the spray boom 46 includes an initialpre-rinse with hot water, followed by a detergent-spraying period, andanother rinse period. Hot water is supplied from a hot water heater 74to a hot detergent reservoir 76 and a reservoir 78 for hot rinse water,through a conduit 80 and suitable valve mechanisms (not shown). Atwo-way solenoid valve 82 is connected to the inlet of the pump 72, oneinlet of the valve 82 being connected to the reservoir 76, and the otherinlet to the reservoir 78. The solenoid valve 82, the pump 72, theexhaust fan 42, the hot air blower 46 and the spray boom motor 58 areall connected to a control unit 84, for automatic operation.-

The control unit 84 is a conventional cyclic switching unit, theduration of each step in the cycle being set on a time clock mechanism86 included as a part of said unit. Electricity is supplied to the unit84 through a pair of leads 88 and 90 connected to the output terminalsof a master switch 92 operable by a key 94, the input terminals of themaster switch 92 being connected to a power supply 96. inserted in thepower lead 88 is a key-operated micro safety switch 98.

The master switch 92 can be mounted on the enclosure 10 adjacent thedoor 12, or at some remote point. The safety switch 98 is intended to bemounted in a prominent location, where a user of the facility will cometo pick up a key 100 to open the normally locked door 12. The switch 98is mounted on a display plaque 102, and includes a pushbutton 104 havingan anvil 106 mounted in confronting relationship. When the restroom 2 isnot in use the key 100 is inserted under the anvil 106, depressing thepushbutton 104, and closing the switch 98. When the key 100 is removed,the switch 98 opens, thereby rendering the controller unit 84inoperative. This arrangement is designed to help prevent accidentaloperation of the cleaning system while a person is in the restroom 2.

The present method for cleaning a restroom includes as a first stepspraying the interior of the restroom with cleansing fluid, first withwater, then with water containing a suitable detergent or cleaningagent, and finally with rinse water. The cleansing fluids are thendrained away, any accumulated vapors are exhausted, and finally heateddry air is passed through the enclosure. Before beginning a cleaningcycle, the operator ascertains that the restroom 2 is empty, picks upany loose trash, and removes with detergents, stains, lipstick marks andthe like.

The method is carried out with the apparatus shown in the drawing byfirst placing the key 100 beneath the anvil 106 to close the safetyswitch 98, after which the key 94 is inserted into the master switch 92for operating the same. When electricity flows through the leads 88 and90, a solenoid lock 108 is energized to secure the access door 12, andwarning lights 110 on the plaque 102 and 112 on the exterior of theenclosure are illuminated. The control unit 84 is also energized, andthe conventional switching circuits thereof operate the system inaccordance with cycle times preset on the timer 86.

The control unit 84 first energizes the motor 58 and actuates thesolenoid valve 82 to connect the pump 72 to the hot water rinse tank 78,whereupon the pump 72 is energized to begin the pre-rinse cycle. Duringthe pre-rinse cycle the spray boom 48 travels around the interior of thecylindrical enclosure 10, and the nozzles 50 act to thoroughly wetsubstantially everything within the restroom. When the timer 86terminates the prerinse cycle, the controller 84 actuates the solenoidvalve 82 to connect it with the detergent reservoir 76, and the washcycle commences. At the conclusion of the wash cycle, the valve 82 isagain switched to the rinse water reservoir 78, and the spraying cycleis cornpleted.

The controller unit 84 then deactivates the pump 72, the motor 58 andthe solenoid valve 82, and starts the exhaust fan 42 to being theexhaust step. The enclosure 10 is usually filled with fumes by the spraycycle, which fumes can be unpleasant depending on the detergent orcleaning agent employed. The liquids themselves are, of course, drainedfrom the enclosure through the drain 6.

When the fumes have been removed from the enclosure 10 and drawing ofthe fluids is essentially complete, the timer 86 causes the controllerswitch unit 84 to energize the hot air blower 46, thus flooding therestroom 2 with hot drying air. When this step is completed, thecontrolled unit 84 deactivates the system, the key 94 is removed to turnoff the warning lights 110 and 112 and to release the safety lock 108,and the facility is again ready for use. The spray boom 48 is movedbehind a panel 120 mounted within the enclosure 10, to conceal the samewhen not in use.

it is readily seen that the present system and method make it possiblefor a filling station or other business to consistently offer cleanrestroom facilities, the act of thorough cleaning being such an easymatter to accomplish. Thus, both management and consumers are benefited.

Obviously, many modifications and variations of the invention arepossible, without departing from the teachings hereof.

We claim:

1. A self-cleaning restroom, comprising; an upright enclosure, includinga sidewall having an entrance door therein, and a bottom wall; apedestal mounted on said bottom wall centrally of said enclosure andhaving at least one bathroom fixture thereon, said pedestal and saidfixture being spaced from said sidewall; a vertically disposed sprayboom; means for mounting said vertically disposed spray boom within saidenclosure for movement substantially completely around the innerperiphery of said sidewall on a fixed path, said vertically disposedspray boom extending for a substantial height within said enclosure andhaving nozzle means spaced vertically therealong; means for supplyingcleansing liquid to said spray boom; and control means connected withsaid spray boom mounting means and said cleansing liquid supply meansfor selectively operating the same to effect a cleaning cycle for saidrestroom.

2. A self-cleaning restroom as recited in claim 1, wherein said sidewallis cylindrical.

3. A self-cleaning restroom as recited in claim 1, wherein saidenclosure further includes a top wall, the periphery of said top wallbeing spaced from said sidewall to provide an annular spacefor the flowof air; vent air means on one side of said annular space arranged toadmit outside air to the interior of said enclosure; and an exhaust fanmounted on the other side of said annular space, said exhaust fan beingconnected with said control means to be operable thereby after operationof said spray boom for exhausting steam from said enclosure.

4. A self-cleaning restroom as recited in claim 3, further includingmeans for supplying heated drying air to said enclosure, said heated airsupply means being connected with said control means to beoperablethereby after operation of said spray boom for effecting drying of theinterior of said restroom.

5. A self-cleaning restroom as recited in claim 4, includingadditionally lock means for said door, said lock means being connectedwith said control means and being operable thereby to lock said doorclosed during a cleaning cycle.

6. A self-cleaning restroom as recited in claim 1, wherein said sprayboom includes both nozzles directed toward said sidewall, and nozzlesdirected toward said pedestal.

7. A self-cleaning restroom, comprising: an upright enclosure, includinga sidewall having an entrance door therein, and a bottom wall; apedestal mounted on said bottom wall centrally of said enclosure andhaving at least one bathroom fixture thereon, said pedestal and saidfixture being spaced from said sidewall; a vertically disposed sprayboom, including both nozzles directed toward said sidewall and nozzlesdirected toward said pedestal; means for mounting said spray boom withinsaid enclosure for movement around the inner periphcry of said sidewall,said spray boom mounting means including: a lower track mounted toextend around the periphery of the lower end of said sidewall; an uppertrack mounted to extend around the periphery of the upper end of saidsidewall; upper and lower carriage means on said spray boom, adapted toride on said upper and lower tracks, respectively; and motor meansassociated with one of said carriage means for propelling said sprayboom; means for supplying cleansing liquid to said spray boom; andcontrol means connected with said spray boom mounting means and saidcleansing liquid supply means for selectively operating the same toeffect a cleaning cycle for said restroom.

8. A self-cleaning restroom as recited in claim 1, wherein said pedestalhas mounted thereon: a water closet; a lavatory; illumination means; abracket for holding tissue paper, and including a waterproof closure;and means for drying the hands after washing.

9. A self-cleaning restroom as recited in claim 1, wherein saidenclosure includes a vent means, and an exhaust fan spaced from saidvent means.

10. A self-cleaning restroom as recited in claim 9, includingadditionally means for supplying heated drying air to said enclosure.

11. A self-cleaning restroom, comprising: an upright enclosure,including a sidewall having an entrance door therein, a bottom wallhaving a drain therein,-and a top wall mounted with the peripherythereof-spaced from said sidewall to provide an annular flow spacetherebetween; a pedestal mounted on said bottom wall centrally of saidenclosure and having at least one bathroom fixture thereon, saidpedestal and said fixture being spaced from said sidewall; a verticallydisposed spray boom, including nozzles directed toward said sidewall,and nozzles directed toward said pedestal; means for mounting said sprayboom within said enclosure for movement around the inner periphery ofsaid sidewall; means for supplying cleansing liquid to said spray boom;vent means on one side of said annular flow space; an exhaust fanmounted on the other side of said annular flow space; means forsupplying heated drying air to said enclosure; and control meansconnected with said spray boom mounting means, said liquid supply means,said exhaust fan, and said heated drying air supply means for operatingthe same to effect a cleaning cycle for said restroom, said cycleincluding the steps of: operating said spray boom and said cleansingliquid supply means to spray cleansing liquids on said sidewall, and onsaid pedestal and all fixtures mounted thereon; operating said exhaustfan to remove from said enclosure vapors created by said sprayingoperation; and operating said heated air supply means to pass drying airthrough said enclosure.

12. A self-cleaning restroom, comprising: an upright enclosure,including a sidewall having an entrance door therein, and a bottom wall;bathroom fixture means mounted within said enclosure; a verticallydisposed spray boom; means for mounting said vertically disposed sprayboom within said enclosure for movement substantially completely aroundthe inner periphery of said sidewall on a fixed path, said verticallydisposed spray boom extending for a substantial height within saidenclosure and having nozzle means spaced vertically therealong, and saidbathroom fixture means being arranged whereby to provide an unobstructedpath for the peripheral movement of said spray boom;

means for supplying cleansing liquid to said spray boom; and controlmeans connected with said spray boom mounting means and said cleansingliquid supply means for selectively operating the same to effect acleaning cycle for said restroom.

13. A self-cleaning restroom as recited in claim 12', wherein saidnozzle means on said spray boom are arranged to direct spray bothinwardly and outwardly, from substantially the level of said bottom wallto at least above the height of said fixture means.

1. A self-cleaning restroom, comprising; an upright enclosure, includinga sidewall having an entrance door therein, and a bottom wall; apedestal mounted on said bottom wall centrally of said enclosure andhaving at least one bathroom fixture thereon, said pedestal and saidfixture being spaced from said sidewall; a vertically disposed sprayboom; means for mounting said vertically disposed spray boom within saidenclosure for movement substantially completely around the innerperiphery of said sidewall on a fixed path, said vertically disposedspray boom extending for a substantial height within said enclosure andhaving nozzle means spaced vertically therealong; means for supplyingcleansing liquid to said spray boom; and control means connected withsaid spray boom mounting means and said cleansing liquid supply meansfor selectively operating the same to effect a cleaning cycle for saidrestroom.
 2. A self-cleaning restroom as recited in claim 1, whereinsaid sidewall is cylindrical.
 3. A self-cleaning restroom as recited inclaim 1, wherein said enclosure further includes a top wall, theperiphery of said top wall being spaced from said sidewall to provide anannular space for the flow of air; vent air means on one side of saidannular space arranged to admit outside air to the interior of saidenclosure; and an exhaust fan mounted on the other side of said annularspace, said exhaust fan being connected with said control means to beoperable thereby after operation of said spray boom for exhausting steamfrom said enclosure.
 4. A self-cleaning restroom as recited in claim 3,further including means for supplying heated drying air to saidenclosure, said heated air supply means being connected with saidcontrol means to be operable thereby after operation of said spray boomfor effecting drying of the interior of said restroom.
 5. Aself-cleaning restroom as recited in claim 4, including additionallylock means for said door, said lock means being connected with saidcontrol means and being operable thereby to lock said door closed duringa cleaning cycle.
 6. A self-cleaning restroom as recited in claim 1,wherein said spray boom includes both noZzles directed toward saidsidewall, and nozzles directed toward said pedestal.
 7. A self-cleaningrestroom, comprising: an upright enclosure, including a sidewall havingan entrance door therein, and a bottom wall; a pedestal mounted on saidbottom wall centrally of said enclosure and having at least one bathroomfixture thereon, said pedestal and said fixture being spaced from saidsidewall; a vertically disposed spray boom, including both nozzlesdirected toward said sidewall and nozzles directed toward said pedestal;means for mounting said spray boom within said enclosure for movementaround the inner periphery of said sidewall, said spray boom mountingmeans including: a lower track mounted to extend around the periphery ofthe lower end of said sidewall; an upper track mounted to extend aroundthe periphery of the upper end of said sidewall; upper and lowercarriage means on said spray boom, adapted to ride on said upper andlower tracks, respectively; and motor means associated with one of saidcarriage means for propelling said spray boom; means for supplyingcleansing liquid to said spray boom; and control means connected withsaid spray boom mounting means and said cleansing liquid supply meansfor selectively operating the same to effect a cleaning cycle for saidrestroom.
 8. A self-cleaning restroom as recited in claim 1, whereinsaid pedestal has mounted thereon: a water closet; a lavatory;illumination means; a bracket for holding tissue paper, and including awaterproof closure; and means for drying the hands after washing.
 9. Aself-cleaning restroom as recited in claim 1, wherein said enclosureincludes a vent means, and an exhaust fan spaced from said vent means.10. A self-cleaning restroom as recited in claim 9, includingadditionally means for supplying heated drying air to said enclosure.11. A self-cleaning restroom, comprising: an upright enclosure,including a sidewall having an entrance door therein, a bottom wallhaving a drain therein, and a top wall mounted with the peripherythereof spaced from said sidewall to provide an annular flow spacetherebetween; a pedestal mounted on said bottom wall centrally of saidenclosure and having at least one bathroom fixture thereon, saidpedestal and said fixture being spaced from said sidewall; a verticallydisposed spray boom, including nozzles directed toward said sidewall,and nozzles directed toward said pedestal; means for mounting said sprayboom within said enclosure for movement around the inner periphery ofsaid sidewall; means for supplying cleansing liquid to said spray boom;vent means on one side of said annular flow space; an exhaust fanmounted on the other side of said annular flow space; means forsupplying heated drying air to said enclosure; and control meansconnected with said spray boom mounting means, said liquid supply means,said exhaust fan, and said heated drying air supply means for operatingthe same to effect a cleaning cycle for said restroom, said cycleincluding the steps of: operating said spray boom and said cleansingliquid supply means to spray cleansing liquids on said sidewall, and onsaid pedestal and all fixtures mounted thereon; operating said exhaustfan to remove from said enclosure vapors created by said sprayingoperation; and operating said heated air supply means to pass drying airthrough said enclosure.
 12. A self-cleaning restroom, comprising: anupright enclosure, including a sidewall having an entrance door therein,and a bottom wall; bathroom fixture means mounted within said enclosure;a vertically disposed spray boom; means for mounting said verticallydisposed spray boom within said enclosure for movement substantiallycompletely around the inner periphery of said sidewall on a fixed path,said vertically disposed spray boom extending for a substantial heightwithin said enclosure and having nozzle means spaced verticallytherealong, and said bathroom fixture means being arranged whereby toprovide an unobstructed path for the periphEral movement of said sprayboom; means for supplying cleansing liquid to said spray boom; andcontrol means connected with said spray boom mounting means and saidcleansing liquid supply means for selectively operating the same toeffect a cleaning cycle for said restroom.
 13. A self-cleaning restroomas recited in claim 12, wherein said nozzle means on said spray boom arearranged to direct spray both inwardly and outwardly, from substantiallythe level of said bottom wall to at least above the height of saidfixture means.